package jalview.gui;

import jalview.datamodel.*;
import jalview.schemes.*;
import jalview.util.*;

import java.awt.*;
import java.awt.geom.*;
import java.util.*;

public class GraphRenderer implements RendererI {
    protected Color   color = Color.black;
    protected Color   maroon = new Color(200,0,50);

    public Color getResidueBoxColour(ColourSchemeI cs, SequenceI seq, int i) {
	Color c = cs.findColour(seq,seq.getSequence(i,i+1),i,null);
	return c;
    }

    public void drawSequence(Graphics g,ColourSchemeI cs,SequenceI seq,int start, int end, int x1, int y1, double width, int height,boolean showScores, boolean displayBoxes, boolean displayText,Vector pid, int seqnum,AlignViewport av) {

	int i      = start;
	int length = seq.getLength();

	Color currentColor = Color.white;

	g.setColor(Color.black);

        int prev = -1;

	while (i <= end && i < length) {
            char c = seq.getCharAt(i);

            if (c != '-') {
	    Vector values = (Vector)pid.elementAt(i-start);
	    int val = ((Integer)values.elementAt(seqnum)).intValue();

	    int frac = (int)(100*val/(av.getPIDWindow()+1));

//	    if (frac > 95) {
 //               g.setColor(maroon);
  //          } else if (frac > 90) {
//		g.setColor(Color.red);
//	    } else if (frac > 80) {
//		g.setColor(Color.orange);
//	    } else if (frac > 70) {
//		g.setColor(Color.pink);
//	    } else if (frac > 50) {
//		g.setColor(Color.yellow);
//	    } else if (frac > 30) {
//		g.setColor(Color.lightGray);
//	    }

            int baseline = av.getPIDBaseline();

            frac -= baseline;

            if (frac < 0) {
              frac = 0;
            }
	    if (baseline == 100) {
		baseline = 99;
	    }

             Graphics2D g2d = (Graphics2D)g;

	     g2d.setColor(new Color(255*frac/(100-baseline),50*frac/(100-baseline),50*frac/(100-baseline)));

             //g.setColor(new Color(255*frac/(100-baseline),50*frac/(100-baseline),255-50*frac/(100-baseline)));
	     //g.fillRect(x1+(int)(width*(i-start)),y1+height - (int)(frac*height/(100-baseline)),
			   //width,                      (int)(frac*height/(100-baseline)));

             int[] xpoints = new int[4];
             int[] ypoints = new int[4];

             if (prev == -1) {
               prev = y1 + height - (int)(frac*height/(100-baseline));
             }

	     //   1----2
	     //   |    |
	     //   4----3

	     xpoints[0] = (x1+ (int)(width*(i-start)));
             ypoints[0] = prev;

             xpoints[1] = (x1 + (int)(width*(i-start+1)));
             ypoints[1] = y1 + height - (int)(frac*height/(100-baseline));

             xpoints[3] = (x1 + (int)(width*(i-start)));;
             ypoints[3] = y1 + height;

             xpoints[2] = (x1  + (int)(width*(i-start+1)));
             ypoints[2] = y1 + height;

	     Polygon poly = new Polygon();

	     poly.xpoints = xpoints;
	     poly.ypoints = ypoints;
	     poly.npoints = 4;

             g2d.fill(poly);

             if (width > 5) {
		 g.setColor(Color.black);
		 g.drawString(seq.getSequence().substring(i,i+1),x1+(int)(width*(i-start)),y1+height);
             } else {
		 g.setColor(Color.black);

		 if (prev != -1) {

              g.drawLine(x1+(int)(width*(i-start)-width/2),  prev,
                         x1+(int)(width*(i-start+1)-width/2),y1+height - (int)(frac*height/(100-baseline)));
              } else {
              g.drawLine(x1+(int)(width*(i-start)),  y1+height - (int)(frac*height/(100-baseline)),
                         x1+(int)(width*(i-start+1)),y1+height - (int)(frac*height/(100-baseline)));
              }

            }
            prev = ypoints[1];
	    }  else {
              prev = -1;
            }
	    i++;
	}
    }

}